Abtitor sokol



A. SOKOL.. CALENDAR.

lRPPLICM'ION FILED DEC-14,1915.

1 Januar @P03/l? eooeo: VL ved/bro@ may, f @manda/faz.

3513 lus @www f E ARTHUR soK'oL, `or NEW YORK, N. Y.

cALENDAR. l y. r

Specification of Letters Patent.

Patented aug.' ie, raie.

Application led December 14, 1915.- Seral No. 66,853.

To all whom t may concern Be it known that I, ARTHUR Sonor., a subject of the Emperor of Austria, and resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Calendars, of which the following is a specication.

This invention relates to improvements in calendars, and in particular to types by which the day of the week, in any month, may be ascertained.

The principal object is to prov-ide a simple device, carrying certain numerals and predetermined constants, by the aid of which, and a simple mental calculation, invariably correct results may be obtained. l

The invention consists in the peculiar coupling of numerals with significant characters as shown in the accompanying drawing, used to illustrate this specification, and in which:-

The drawing shows a chart covering a specific number of years constructed according -to the present invention.

In order to clearly understand this invention it is to be borne in mind that there are twelve calendar months in each year,

. January, February, March, etc., also that there are seven days in each Week, -as Sunday, Monday, Tuesday, etc., Sunday being regarded as the rst day of the week and Saturday as the seventh or last.

In carrying out this invention, the numerals 1 to 12, representing the months of the year, are displayed in any convenient manner.

Arranged adjacent to each of these numerals are other significant symbols, tokens or constants B, here shown to consist of dots in groups containing from zero to siX, and it may be here stated that Arabic numerals can be used for this purpose with equal results. i

These numeralsl and dots, as before stated, may be displayed upon the card, or in fact upon any convenient surface whatever.

The invention is made use of in ascertaini ing upon what day of the week `any day of any month may occur and the determination is arrived at in the following manner Let it be required to know on what day the 25th of November, 1915 will fall.

As November is the eleventh month, eleven is added to twenty-live (the day of the month in question) and added to that sum is the number of the symbol for the numeral 1l, which in this case is four, making a total of forty; this divided by seven, (the number of days in one week), leaves a remainder of live and obviously the fifth day of the week falls on Thursday.

From this may be deduced the rule:-

Add to thev number representing the day of the month sought, the number representing that month and the constant coordinated with it; divide this sum by the number of days in a week and the remainder will indicate the day of the week upon which the date will fall; if the sum be less than seven, then that sum will correctly indicate the day of the week required.

The chart shown in the drawing gives the constants to be associated with any months during the years 1866 to 1939 inelusive and other years can be readily calculated.

Obviously other modifications may be made embodying the characteristics of the invention without departing from thesubstance of the claim hereto made.

Having thus described my invention, together wi-ththe manner of its application and use, what I claim as new and desire to secure by Letters Patent is A device as described, consisting of a chart having a series of longitudinal lines inscribed thereon and providing a narrow vertical column lat the extreme left of the chart, a broad vertical column to the right of the narrow column, and twenty vertical narrow columns to the right of the broad column, a series of transverse lines intersecting said twenty vertical columns so as to set apart at spaced intervals longitudinally of the chart, sets of twelve rows of squares, dividing the broad vertical column into sets of twelve rectangles in which the consecutive months of the year are inscribed, and also dividing the firstmamed narrow Vertical column into squares in which are inscribed in consecutive order numbers one to twelve, the twelve rows of squares having inscribed herein in Varying order representations of digits, a consecutive series of years 18664939 being inscribed immediately abone and in line with the twenty narrow 10 vertical columns of each set of vertical co1- umns, each alternate set of rows of squares having the representations of digits within its small squares arranged in exactly the sanie order and being 'exactly of the same value.

Signed at New York, in the county of New York and State of New York, this 11th day of December, A. D. 1915.

ARTHUR soKoL.

Copiesd o1. this patent may be obtained for ve cents each, by addressing'the Commissioner of Patents, Washington, D. C. 

